Taper-turning attachment for turret-lathes.



M. HARRISON.

.TAPER TURNING ATTACHMENT FOR TURRET LATHES.

APPLICATION FILED JUNE 11. 1915.

1,187,457. Patented June 13, 1916.

2 SHEETS-SHEET I.

WITNESS IN V EN TOR.

A TTOR NE Ya -'m1: COLUMBIA PLANOGRAPH co.. WASHINGTON. D. c.

M. HARRISON.

' TAPER TURNING ATTACHMENT FOR TURRET LATHES.

APPLICATION FILED JLINE n. 1915.

. 1 187 457, PafentedJune 13, 1916.

2 SHEETS-SHEET 2.

W I TNESS IN V EN TOR.

A TTORNE Y FEE.

MATTHEW HARRISON, OF GHICOPEE FALLS, MASSACHUSETTS, ASSIGNOR OF ONE-HALF T0 ARTHUR CBEEI) WRIGHT, OF SPRINGFIELD, MASSACHUSETTS.

[PAPER-TURNING ATTACHMENT FOR TURR-ET-LATHES.

Specification of Letters Patent.

Patented June 13, 1916.

Application filed June 11, 1915. Serial No. 33,484.

To all whom it may concern:

Be it known that I, MATTHEW HARRISON, a citizen of the United States of America, residing in Chicopee Falls, county of Hampden, and State of Massachusetts, have invented certain new and useful Improvements in Taper-Turning Attachments for Turret-Lathes, of which the following is a specification.

This invention relates to improvements in taper turning attachments for turret lathes.

Taper turning attachments have been heretofore applied to turret lathes, as shown in the patent to Tucker No. 182,210, granted September 6, 1892, and have been applied to engine lathes as shown in the patent to Miles No. 253,110, granted February 7, 1882. So far as I am aware, however, these prior attachments have been so constructed that they require a special setting of the regular lathe parts which special setting either prevents or interferes with the desired or eiiicient working of other tools in conjunction with the taper cutting atachment. For example, in the structure of Tuckers patent the setting of the turret must be arranged with respect to the special attachment and regardless of the. desired operations of other tools on the turret. In the structure of Miless patent, the taper turning attachment is mounted in part on the regular tool holding slide, and various tools as desired cannot be used successively with the attachment unless the operator sets up the tool each j by the Jones & Lamson Machine Company time it is used.

The object of my invention is to provide 1 a taper turning attachment particularly for fiat turret lathes which may be in part adjusted and carried on the top of the flat turret independently of all other tools and capable of operation without requiring a resetting of any of the successively used tools or parts of the lathe.

Another object of the invention is to provide such an attachment which may be readily and conveniently placed in and out of operable condition without disturbing the accurate setting of the parts, and, therefore, may be carried on the turret all ready for use and without interfering with the other tools on the turret which may sometimes operate in conjunction with the attachment and sometimes operate independently for a period when the attachment is not desired for use.

With these objects in View, it may be stated that my invention is particularly characterized by its general adaptability for use with other tools on the turret and the saving in the time heretofore required for accurately setting the tools including the taper attachment. Y

For the purposes of illustration, a single preferred embodiment of the invention is shown in the accompanying drawings, in

which Figure l is a plan view of a portion of a turret lathe showing my invention as applied thereto; Fig. 2 is a partial cross sectional view taken on the line 2-2 of Fig. 1 and looking in the direction of the arrows;

Fig. 3 is a sectional View taken on the line 38 of Fig. 1 and looking in the direction of the arrows; Fig. 4 is a sectional view taken on the line 4-1 of Fig. 1 and looking in the direction of the arrows.

Referring to these drawings in detail: Figs. 1 and 2 show, in outline only, certain portions of a turret lathe. The particular form of lathe, chosen for the purposes of illustration, is a well known type, for eX- ample such a one as is shown and described in a book entitled Machine Building for Profit'cmel the Flat T arret Lathe published in 1909. To this publication reference is made for all details of construction and operation of the turret lathe not hereinafter specifically described.

7 The turret of the lathe is indicated at a and is. mounted for rotation about its vertical axis on a carriage b. The latter is slidably mounted on ways 0 formed on the frame A of the lathe. cZ represents a por tion of the head within which means are provided for supporting and driving a work holding chuck e. The head (Z is arranged to be slidable transversely to the ways 0, whereby a suitable cross feed of the work 7 to the cutting tools is provided. The

head (Z is movable by the operation of wheel 9 for hand feed and 72 represents a lever, which controls the parts to automatically feed the head d, whereby therlatter'may operate by hand or automatically. The carriage b is movable longitudinally along the ways I) either by the spoked wheel or by the lever is, the latter being arranged to set the parts for an automatic feed for the carriage. The turret a is arranged for inter mittent rotation in a step by step manner in the usual way and the mechanism for moving the turret is operable from a bar z'. The latter is arranged to engage a suitable stop fixed to the frame A (not shown) at theend of each longitudinal movement of the carriage 6, whereby the turret is automatically turned in a manner well known and set forth in the above mentioned publication.

The turrent a has a flat upper face provided with equally spaced radial slots Z to receive a plurality of cutting tools which may be secured to the turret by bolts or screws applied to the tapped holes m in the usual manner. Secured to the upper face of the turret by the two cap screws shown is a member, 1. -'The latter is positioned on the turret a by a tongue 3 (see Fig. 2), which engages in one of the slots Z and in a similar slot in the under face of the member 1. The'member 1 is formed with ways (see Fig. 4:) arranged longitudinally therein to receive a slide 2 and, at one end of the latter and on the under side thereof, is a roll 4, which is rotatably mounted in the manner clearly shown in Fig. 3.

Mounted on a pair of spaced brackets 5, secured to the frame A, is a horizontally arranged plate 6, which may be held in various positions of longitudinal adjustment by cap screws 7 and the slots clearly shown in Fig. l. Rotatably connected with the plate 6 by a pin 8 (see Fig. 3) is a member 9, which is formed witha slot 10 to receive the roll 4 on the slide 2 as clearly shown in Figs. 2 and 3. The plate 6 is formed with curved slots 11 to receive cap screws 12, which. are threaded into the member 9 and arranged to secure the latter to the plate 6 in various positions of angular adjustment. Suitable graduations 13 on the plate 6 (see Fig. 1) and a mark 14 on an end face of the member 9, (see Fig. 2) permit the accurate setting of the latter in any desired position of angularity.

The slide 2 has formed therein a longitudinal T-slot 15 arranged to receive the customary tool post 16. 17' represents the usual rocker'seat to receive a rocker 18 upon which a cutting tool 19 may be sup- 12. hen the turret a is turned by the bar 2' to bring it into the angular position shown in Fig. 1, the carriage b is in its extreme right hand position. Thereafter, as the carriage b is moved forwardly by the wheel the operator moves the slide 2 in the member 1 until the roll 4 alines with the right hand opening 'of the slot 10. Continued movement of the carriage will thus bring the roll 4 into the slot 10. The tool 19 and work 7" are next brought into proper cooperative relation by moving the headol by means of the wheel 9. If desired the tool holder 16 may be also moved in the slot 15 to secure this adjustment. Having brought the work f and tool 19 in proper cooperative relation the automatic longitudinal feed for the carriage b is then started by the'lever 7a and the cutting operation proceeds. As the carriage 6 moves longitudinally on its ways 0 the cam slot 10 forces the slide 2 to move in aparallel path, whereby the tool 19 cuts a taper on the work 7. I I

At the end of the cutting operation, the automatic feed for the carriage b is disconnected and, as the latter is moved to the 7 right by the wheel j, the roll 4 finally leaves the slot 10 and is disconnected therefrom. The turret a may then be turned in the manner described to bring other cutting tools held in the slots Z into position. If desired, the operator may withdraw the bled relation thereon, from the member 1... This operation is quickly and easily accomplished since there is simply a sliding connection between the elements. In certain instances it may be necessary to so remove the slide, where small clearances would not permit the free rotation of the turret with the slide 2 projecting therefrom.

Thus, I have provided a taper turning at-' tachment for a turret lathe, wherein the relative movable tool carrying member may be quickly and easily connected and automatically separated.

It is well understood that certain modifications may be made in the structure described without departing from the scope of my invention which is defined in the appended claim.

What I claim is:

A taper turning attachment for fiat turret lathes comprising, in combination, a member formed with ways and constructed. to be mounted on the upper surface of a flatturret independently of all other tools thereon and adjustable to cooperate as'desired with the other tools in their normal setting, a tool carrying slide mounted in the ways of said member, a bracket arranged to be attached to the side of the lathe frame independently of all regular operating parts of the'lathe, guiding means mountslide 2 with tool holder and tool in assemed on said bracket having a guide slot open the turret in accordance with the setting of at both ends and arranged for independent the other tools thereon and operate in conangular adjustment, a slotengaging part on junction and Without disturbing the setting 19 said slide to operate the latter in accordof any of the desired adjustments of the ance With said angular adjustment, all con lathe parts or tools.

structed and arranged so that said tool-carrying slide and its tool may be adjusted on liL ll ll llilW HARRISON.

Oopiea of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. G. 

